KR100749389B1 - A butterfly valve - Google Patents

Abstract

The present invention relates to a butterfly valve having a disk seating that absorbs deformation, and more particularly, in order to smoothly open and close the disk even if the disk is deformed by a high fluid pressure, the disk is installed with elastic packing The seat ring is inserted into the disk deformation absorbing groove of the disk, thereby providing a butterfly valve with a disk seat that the deformation of the disk is absorbed by the space portion of the disk deformation absorbing groove formed by the elastic packing and the elastic packing.

According to the present invention, the body seating the body seating ring inside; A butterfly valve comprising a disk seated in a convex spherical shape in contact with the body seating ring, the disk seating being formed by a pivoting shaft provided inside the body. A disk deformation absorption groove into which the ring is inserted is formed; The disk seating has a thickness smaller than the width of the disk deformation absorbing groove, the groove is annular on the inner surface and the disk pressing surface, the elastic packing is inserted into the groove to protrude, the disk deformation on the bottom and side of the disk deformation absorbing groove There is provided a butterfly valve installed while forming a space capable of absorbing water.

Butterfly Valve, Disc, Body, Disc Seating, Body Seating, Elastic Packing

Description

Butterfly valve with disk seating to absorb deformations {A butterfly valve}

1 is an overall cross-sectional view of the present invention

Figure 2 is a detailed cross-sectional view of the disk seating portion of the present invention

Figure 3 is another embodiment of the disc seating portion of the present invention

4 is another combination relationship between the disc seating and the body seating of the present invention

※ Explanation of codes for main parts of drawing

1: Body seating 2: Body

3: Disc seating 4: Rotating shaft

5: disc 6: disc deformation absorption groove

7: inner surface 8: disk pressing surface

9: groove 10: elastic packing

11: auxiliary disk seating 12: auxiliary disk pressing surface

13: Body side disk deformation absorption groove 14: Body pressing surface

15: exterior 16: auxiliary body sheeting

17: auxiliary body pressure surface

100: Butterfly Valve

The present invention relates to a butterfly valve equipped with a body seat ring that absorbs deformation, more specifically, in order to facilitate the opening and closing of the disk even if the disk is deformed by high fluid pressure, the disk is installed elastic packing The seat ring is inserted into the disk deformation absorbing groove of the disk, and relates to a butterfly valve in which the deformation of the disk is absorbed by the space portion of the disk deformation absorbing groove formed by the elastic packing and the elastic packing.

The structure of a general butterfly valve includes a body in which a body seat surface formed as a conical surface is rounded inside, and a disk in which a convex spherical disk seat which is in surface contact with the conical surface is formed at an outer circumferential edge thereof. It has a structure that is pivoted on a rotating shaft installed in the shaft.

The butterfly valve having the above structure is opened and closed while the disk is rotated around the rotation shaft, the disk seat is integrally formed on the periphery of the disk, the body seat is integrally formed with the body inside the body, The disk seat surface and the body seat surface is eccentric, so that when the disk is rotated around the rotating shaft, the valve is easily opened and closed by the body is opened and closed.

In such an eccentric, double eccentric, triple eccentric, etc., all of the eccentric butterfly valves have a deformation in which the disk is bent in the flow direction of the fluid by the pressure of the fluid flow.

The deformation of the disk is severely deformed toward the edge, that is, the disk sheet, around the rotational axis. The deformation varies depending on the size, shape, and material of the disk, but cannot be eliminated by the pressure of the fluid. Especially in large butterfly valves or where high fluid pressure is applied, the deformation is more severe.

In the conventional butterfly valve, when the disk is deformed due to fluid pressure, the disk seat and the body seat may be subjected to excessive friction or the disk seat may be severely deformed in the direction in which the disk closes. The problem of being caught or caught over the body seat occurs, in this case there is a problem that can not be opened even when trying to open the valve.

As another embodiment of the related art, a disc seating is installed on the disc seat, and a body seating is installed on the body seat, such that the disc seating and the body seating are in contact with each other. In this case, however, either the body seat ring or the disc seat ring is made to be elastic in order to solve the inability to open due to the deformation of the disc. If the body seat ring and the disc seat ring is made of a non-elastic shackle, it is because the state of the same state as in the conventional case due to the friction between the seat ring due to the pressure of the fluid after assembly occurs.

Therefore, one of the seat ring is made of elastic rubber, urethane, Teflon, etc., when fabricated with a non-elastic metal was used by processing a thin to have the properties of elasticity.

However, there are also many problems, such as elastic rubber, urethane, Teflon wear is easy to break the seat ring due to foreign matter in the fluid well, weak chemicals or heat weakens the life of the valve There was a problem.

In addition, in the case of manufacturing a sheeting to have elasticity by processing a thin metal material, there is a problem that it is difficult to process a thin and excessive cost, in the case of a large butterfly valve has a more difficult problem. And even if manufactured by the thin thickness is weak to foreign matters and the elasticity is lost due to the fatigue phenomenon of the metal under the use conditions of high temperature and high pressure appeared to be a problem of durability such as the occurrence of leaks.

An object of the present invention is to resilient the body sheeting or disk seating to solve the problem of using the elastic body seating or disk seating to absorb the disk bending caused by the pressure of the fluid Thick, no-thick shackle improves manufacturability, reduces cost, and improves durability, as well as elastic packing between the disc and the disc seating to prevent deformation of the disc regardless of the contact between the disc seating and the body seating. To provide a butterfly valve that can be effectively absorbed.

Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

The present invention and the body (2) is the body seat ring (1) in the inner side; A disc seat ring 3 having a convex spherical surface in contact with the body seat ring 1 is formed on the outer periphery, and is rotated by a pivot shaft 4 installed inside the body 2. In the configured butterfly valve 100, there is a feature in the installation structure of the disc seat ring 3 or the body seat ring 1 installed on the disc 5 or the body 2.

As shown in FIG. 2, the disk seat ring 3 may be installed in the disk 5, and the disk deformation absorbing groove 6 into which the disk seat ring 3 is inserted may be provided at the outer periphery of the disk 5. Formed.

And the disk seat ring 3 is inserted into the disk deformation absorbing groove (6) to achieve a unique effect of the present invention has a thickness smaller than the width of the disk deformation absorbing groove (6), the inner surface (7) and the disk pressure The groove (8) is rounded on the surface (8), and the elastic packing (10) is inserted into the groove (9) to protrude, and has a simple structure formed of one barrel.

Therefore, the structure in which the disc seat ring 3 is inserted into the disc deformation absorbing groove 6 is formed in the bottom and side surfaces of the disc deformation absorbing groove 6 to absorb the deformation of the disc 5. This is caused by the elastic packing 10 protruding a certain height from the inner surface 7 of the disk seating 3 and the disk pressing surface 8 so that the side wall of the disk deformation absorbing groove 6 is formed by the disk seating 3. Is formed because the disk is not in contact with the pressing surface (8).

As shown in FIG. 3, the auxiliary disk seating 11 is inserted into the disk deformation absorbing groove 6 to enlarge the space portion capable of absorbing the deformation of the disk 5 so as to absorb the larger deformation. It can also be inserted and installed.

The auxiliary disk seating 11 has a structure in which a recess 9 is installed in the auxiliary disk pressing surface 12 and an elastic packing 10 is inserted into the recess 9. The auxiliary disk seating ring 11 is inserted between the disk pressing surface 8 of the disk seating ring 3 and the side wall of the disk deformation absorbing groove 6, and the elastic packing 10 of the disk seating ring 3 is provided. ) And the space portion between one side of the auxiliary disk seating ring 11, the space between the elastic packing 10 of the auxiliary disk seating ring 11 and the side wall of the disk deformation absorbing groove 6 is formed in the disk 5. It becomes a space for absorbing deformation, and the space portion is expanded by the additional installation of the auxiliary disk seating 11.

The mounting structure of the body seat ring 1 can be the same as the above-described mounting structure of the disc seat ring 3, which is illustrated in FIGS. 2 to 4.

That is, as shown in FIG. 2, the body side disk deformation absorbing groove 13 wider than the width of the body seat ring 1 is formed inside the body 2, and the body seat ring 1 is inserted into the structure. to be. The structure of the body seat ring (1) is to be able to absorb the deformation of the disk (5), the groove (9) is formed on the body pressing surface 14 and the outer surface 15, the groove (9) elastic The packing 10 is installed to protrude so as to protrude, and is formed of one simple barrel. In this case, the elastic packing 10 also protrudes a certain height from the groove 9, and forms a space in the body side disk deformation absorbing groove 13 formed in the body 2 by the protruding portion.

That is, the side wall of the body-side disk deformation absorbing groove 13 and the body pressing surface 14 of the body seating ring 1 are formed by the elastic packing 10 installed on the body pressing surface 14 of the body seat ring 1. A space is formed between the spaces between the outer surface 15 of the body sheeting 1 and the inner surface of the body 2 by the elastic packing 10 installed on the outer surface 15 of the body sheeting 1. An additional portion is formed, and the space portions serve as a space for absorbing deformation of the disk 5.

As shown in FIG. 4, the space part capable of absorbing the deformation of the disk 5 is also expanded to the body 2 to assist the body side disk deformation absorbing groove 13 to absorb more deformation. The body seat ring 16 may be further inserted and installed.

The auxiliary body seating ring 16 has a recess 9 formed on the auxiliary body pressing surface 17, and an elastic packing 10 is inserted into the recess 9 and installed to protrude outward of the recess 9. It is made of one simple shackle.

Therefore, between the side wall of the body-side disk deformation absorbing groove 13 and the auxiliary body pressing surface 17 of the auxiliary body seating ring 16, and the other side of the auxiliary body seating ring 16 and the body seating ring 1 Between the body pressing surface 14 of the space portion is formed, the space portion is formed by each elastic packing 10, to absorb the deformation of the disk (5).

The present invention having the structure as described above may have a variety of combinations, the disk deformation absorbing groove 6 is formed in the disk 5, the disk seat is installed elastic packing 10 in the disk deformation absorbing groove (6) In the first embodiment in which the ring 3 is installed, in addition to the first embodiment, the body seat ring 1 in which the elastic packing 10 is also installed in the body 2 is installed in the body side disk deformation absorbing groove 13. 2nd Embodiment In addition to the 2nd Embodiment, the 3rd Embodiment which the auxiliary body seating ring 16 with which the elastic packing 10 was installed in the body side disk deformation absorption groove 13, the 1st Embodiment and the 2nd embodiment In addition to each of the embodiments and the third embodiment, the fourth embodiment, the fifth embodiment, and the sixth embodiment in which the auxiliary disk seating ring 11 in which the elastic packing 10 is installed in the disk deformation absorbing groove 6 are further provided. Have.

2 shows a second embodiment, FIG. 3 shows a fifth embodiment, and FIG. 4 shows a sixth embodiment.

According to the present invention having various embodiments as described above, as shown in FIG. 1, the disk 5 is rotated around the rotating shaft 4 so as to rotate the valve.

When the valve is closed in the state as shown in the solid line of FIG. 1, the fluid pressure on the right side is transmitted to the disk 5 as it is, and the pressure is concentrated on the edge of the disk 5, that is, the disk seating 3. 2) Press the side.

In the conventional case, the disk 5 is deformed and cannot be opened due to the pressure of the fluid. However, the present invention absorbs the deformation of the disk 5 to freely open and close the disk 5. There is this.

That is, in FIG. 2, the pressure of the fluid acts as a deforming force that bends the edge portion of the disk 5, so that the disk 5 is bent about the rotational axis 4 in the direction in which the pressure of the fluid acts. Deformation will occur.

In the conventional case, since the seat seating surface is integrally formed on the peripheral part of the disk 5 or even when the disk seat ring 3 is installed, the disk 5 is integrally press-fitted. The deformation acts on the seat seat or the disc seating of the disk as it is, so that the contact between the contact parts is generated to press the body seat ring integrally pushed into the seat seat or the body 2 of the body 2, which cannot be reopened. It was.

However, the present invention is provided with a space portion that can absorb the deformation of the disk 5, so that even if the disk 5 is deformed by the pressure of the fluid can be absorbed. That is, a space portion or a gap is formed while being sealed by the elastic packing 10, and the space portion absorbs deformation of the disk 5 to prevent the disk 5 from directly acting on the body 2 or the like. do.

When the peripheral portion of the disk 5 is deformed by the fluid pressure in the state where the disk seat ring 3 and the body seat ring 1 are in contact and closed state, the disk seat ring 3 presses the body seat ring 1 immediately. Instead, the disk 5 presses the elastic packing 10 during a predetermined displacement, and the disk of the disk pressing surface 8 and the disk deformation absorbing groove 6 while the elastic force of the elastic packing 10 is maintained. (5) The displacement caused by the deformation of the disk 5 can be absorbed as much as the space formed by the side wall.

In addition, a recess 9 is formed in the inner surface 7 of the disc seat ring 3, and the elastic packing 10 is inserted into the inner surface 7 so that the inner surface of the disc seat ring 3 is formed by the protrusion of the elastic packing 10. A space is formed between the bottom portion of the disk deformation absorbing groove 6. Therefore, the deformation of the disk 5 is also absorbed by the space portion thereof.

That is, the disc seat ring 3 and the body seat ring 1 are in contact with the inclined surface, so that the deformation of the disc 5 is absorbed by the space portion formed by the disc pressing surface 8 of the disc seat ring 3. The remaining deformation causes the disc seat ring 3 to retract and shrink to the inside of the disc 5. At this time, the disk seat ring 3 is moved to the space formed by the inner surface 7 of the disk seat ring 3 and the bottom surface of the disk deformation absorbing groove 6.

Since the disk seat ring 3 is supported by the elastic force of the elastic packing 10, the disk seat ring 3 absorbs the disk seat ring 3 while alleviating the deformation of the disk 5.

As such, the present invention is sufficiently deformed by the elastic force of the elastic packing 10 and the disc seat ring 3 itself since the deformation of the disk 5 due to the pressure of the fluid is absorbed by the space formed by the elastic packing 10. By relieving and absorbing, sticking of the disc seat ring 3 and the body seat ring 1 is prevented.

The deformation of the disk 5 is larger and the more severe the fluid pressure is, the larger the displacement can be absorbed by inserting the auxiliary disk seating 11 as shown in FIGS. 3 and 4.

That is, when the auxiliary disk seating 11 is inserted, the space formed between the side wall of the disk deformation absorbing groove 6 and the auxiliary disk pressing surface 12 of the auxiliary disk seating 11 and the elasticity located therein After the deformation displacement of the disk 5 is absorbed by the protrusion of the packing 10, the space portion formed by the side of the auxiliary disk seating ring 11 and the disk pressing surface 8 of the disk seating ring 3 and The deformation displacement of the disk 5 is absorbed by the protruding elastic packing 10 located. Of course, if there is an extra strain displacement, it is naturally absorbed by the body seating 1.

The body 2 also has a structure that absorbs the deformation displacement of the disk 5, by means of one body seating 1 as shown in FIGS. 2 and 3, and as shown in FIG. The body seat ring 16 may be implemented with a further inserted structure.

Such a structure in the body 2 compensates for the absorption in the disk 5 to absorb larger displacements, or the disk 5 has the same structure as before and the displacement of the disk 5 only in the body 2. It can also be configured to absorb.

Since the strain absorbing action in the disk 5 is as described above, only the structure in the body 2 will be described below. However, it is natural that the disk 5 can be used in combination with the above structure.

In FIG. 2, the deformation of the disk 5 presses the body seat ring 1, which is formed by the space part formed in the body pressing surface 14 and the space part formed in the outer surface 15. The deformation of the disk 5 is absorbed.

That is, the disc seat ring 3 and the body seat ring 1 are in inclined contact, so that the body seat ring 1 faces the outer surface 15 and the body pressing surface 14 by the pressure of the disc seat ring 3. Is moved to. Concave grooves 9 are formed on the outer surface 15 and the body pressing surface 14 of the body seat ring 1, respectively, and the elastic packing 10 protrudes from the grooves 9 so as to protrude. A space portion is formed between the outer surface 15 and the bottom of the body side disk deformation absorbing groove 13 and the side wall of the body pressing surface 14 and the disk deformation absorbing groove 6. The space portion becomes a space portion that absorbs deformation of the disk 5. Of course, it is absorbed while being relaxed by the elastic packing 10 installed in each.

Also, as shown in FIG. 4, the body 2 may be inserted with the auxiliary body seating ring 16 to absorb even a large deformation of the disk 5. That is, when there is a deformation larger than the deformation of the disk 5 absorbed by one body sheeting 1 as described above, the auxiliary body pressing surface 17 and the body side disk deformation of the auxiliary body seating ring 16 The remaining strain can be absorbed by the space formed by the side wall of the absorption groove 13.

As described above, the present invention provides a different displacement to the deformation of the disk 5 by the disk seat ring 3 and the body seat ring 1 installed by the elastic packing 10 on the disk 5 and the body 2. It can absorb and solve the problem that the opening and closing of the disk 5 and the body 2 are impossible due to the deformation of the disk 5.

And the disc seat ring (3), the body seat ring (1), the auxiliary disk seat ring (11), the auxiliary body seat ring (16) is formed of a single clasp, the clasp has a different structural features for elasticity Therefore, the production is very easy. That is, the structure for absorbing the deformation of the disk 5 is made by the space portion of the disk deformation absorbing groove 6 and the body side disk deformation absorbing groove 13 and the elastic packing 10.

As such, the present invention can produce the body seat ring (1) or the disk seat ring (3) with a thick elastic without elasticity, so as to improve the manufacturability and reduce the cost and durability, the body seat ring (1) or disk By providing the elastic packing 10 in the seat ring 3, the deformation of the disk 5 can be effectively absorbed irrespective of the contact surface of the disk seat ring 3 and the body seat ring 1.

Claims (2)

A body 2 in which the body sheeting 1 is rounded inside; A disc seat ring 3 having a convex spherical surface in contact with the body seat ring 1 is formed on the outer periphery, and is rotated by a pivot shaft 4 installed inside the body 2. In the configured butterfly valve, the disk deformation absorbing groove (6) into which the disc seat ring (3) is inserted is formed at the outer periphery of the disk (5); The disc seat ring (3) has a thickness smaller than the width of the disc deformation absorbing groove (6), the groove (9) is provided in the inner surface (7) and the disk pressing surface (8), the elastic packing in the groove (9) The butterfly valve is provided with a disc seating to absorb the deformation, characterized in that the 10 is protrudingly inserted and formed in the bottom and side of the disk deformation absorbing groove 6 to absorb the deformation of the disk. . The auxiliary disk seating ring (11) is inserted between the disk pressing surface (8) of the disk seating ring (3) and the side wall of the disk deformation absorbing groove (6). Butterfly valve having a disk seating to absorb deformation, characterized in that the elastic packing (10) is inserted into the groove (9) annular to the auxiliary disk pressing surface (12).

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